Stampede brushless help.

[nastety92]

Hi my name is Nick I've been a member of this forum for a little while now but dont normally post. I have a Stampede and a E-Maxx both mostly stock. I want to put a brushless setup in the Stampede, this will be my first brushless system and I was wondering which one to go with? I've been looking at the Novak SS5800 and the Mamba Max system. I'm going to keep the truck pretty stock, I'm going to run 6 cell 4200 batteries, the idler will be upgraded and I already have RPM carrier bearings and a RPM front bumper. I'm really looking for long runtimes and decent speed. I'm also looking for help with which gearing to go with.
My next project is going to be a fully built E-Maxx.

Thank you all in advance for any and all help.

Nick